Argh, it's Portuguese with you, sorry! Well, Germans usually don't think about genders and endings either. We just ... äh, know  

. Ok, most of us do, some fail  

.
"rufen" only works without any technical support. It's more like "shout" than "call". When using a phone it's "anrufen".
"Mädchen" is easy, as it follows one of the few gender-rules: Any diminution (ending in 
-chen or 
-lein) by definition is neutral disregarding the original gender. So just wee-ify anthing and be happy with "das" (especially as German - other than some German accents - doesn't differ in singular or plural either as soon as a word is diminured) 

. Another very safe rule ist "
-keit", 
"-heit" and "
-ung" always beeing female (why ever). 
Final cheat for starters: just add "-Dings da" (
thingy) to any noun and again it's neuter: "
der Hund" aber "
das Hunde-Dings da", "die Katze" = "das Katzen-Dings da".  

. German IS easy...  

.
So as this isn't completely off topic... I hadn't realized you cut up the kiosk before you showed it!  I didn't get them yet. I should get a couple... such nice colors too 
Well I got that cue and try to deliver some new pics on topic  

.
jj: